Home / 99,431.92-137,218.80-54,110.32

Finding the Fourth Proportional to 99,431.92, 137,218.80 and 54,110.32

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Solution

The fourth proportional to 99,431.92, 137,218.80 and 54,110.32 is: 74,673.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,431.92 : 137,218.80 = 54,110.32 : x
  2. Step 2: Convert to fraction form
    99,431.92/137,218.80 = 54,110.32/x
  3. Step 3: Cross multiply
    99,431.92x = 137,218.80 × 54,110.32
  4. Step 4: Simplify right side
    99,431.92x = 7,424,953,178.02
  5. Step 5: Solve for x
    x = 7,424,953,178.02/99,431.92
  6. Step 6: Final answer
    x = 74,673.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.